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2 years ago

hey! im still confused on how 3(x+4)=36 can be solved with the distributive property... can you help me?

Mathematics

1 answer:

astraxan [27]2 years ago

6 0

The distributive property is basically expanding brackets.

So if you take 3(x + 4) = 36 and remove the brackets (so multiplying out the 3), you get:

3x + 12 = 36

And from there you simplify :)

3x + 12 = 36

3x = 24

x = 8

The distributive property was used to multiply the 3 through the brackets, thus making the equation easier to solve I guess

Step-by-step explanation:

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Use completing the square to solve for x in the equation (x+7)(x-9) = 25.

balandron [24]

Answer:

x = 1 ±√89

Step-by-step explanation:

We have the equation:

(x+7)(x-9) = 25

Using distributive property:

x(x-9) + 7(x-9) = 25

x²- 9x + 7x - 63 -25 = 0

x²- 2x - 88 = 0

To complete squares we need to add and subtract 1, as follows:

x²- 2x - 88 +1 -1 = 0

x²- 2x +1 -88 -1 = 0 (this is a perfect square)

(x - 1)² - 89 = 0

Solving for x:

(x - 1)² = 89

x - 1 = ±√89

x = 1 ±√89

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3 years ago

Find the critical value zα2/ that corresponds to a 91% confidence level. Question 13 options: a) 1.7 b) 1.95 c) 1.81 d) 2.33 e)

anyanavicka [17]

Answer:

Step-by-step explanation:

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2 years ago

What is 85 divided by 5 in distributive property

Lilit [14]

Answer:

Step-by-step explanation:

85 divided by 5 in distributive property

85 can be break into 80 and 5

80+5 is 85

Now we divide each term by 5

$\frac{85}{5} =\frac{80+5}{5} =\frac{80}{5} +\frac{5}{5}$

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17 is the final answer

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3 years ago

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if you subtract 1/2 from a number and multiply the result by 1/2 you get 1/8. what is the number?? (pls provide steps)

Bas_tet [7]

Answer:

$Number\ is\ \frac{3}{4}$

Step-by-step explanation:

Let the number be x

Subtract 1/2 from x = (x - 1/2)

Multiply 1/2 to the result = 1/2(x - 1/2)

The result is 1/8

That is,

$\frac{1}{2}( x - \frac{1}{2}) = \frac{1}{8}\\\\( x - \frac{1}{2}) = \frac{1}{8}\times \frac{2}{1}\\\\(x-\frac{1}{2}) = \frac{1}{4}\\\\x = \frac{1}{4} + \frac{1}{2}\\\\x = \frac{3}{4}$

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3 years ago

-10 · (-12) = <br> Find the product.

mars1129 [50]

Answer:

$\huge{ \fbox{ \tt{120}}}$

Step-by-step explanation:

$\star{ \: \sf{ \: - 10 \: ⋅ \: ( - 12})}$

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Best regards! :D

~ $\sf{TheAnimeGirl}$

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